OCR Text |
Show 242 MR. A. W. E. O'SHAUGHNESSY ON [Feb. 1, Anolis gracilis, Neuw. Abbild. zur Nat. Brasil. pi. vii. f. 2, Reise, ii. p. 131. Rhinosaurus gracilis, Gray, Cat. Brit. Mus. p. 199. Anolis nasicus, Dum. et Bibr. Erp. Gener. p. 115. The British Museum possesses a single specimen of A. punctatus from Rio Janeiro, which shows the slight differences from A. nasicus indicated in the descriptions of Dumeril and Bibron. Of this latter species there are also four examples, all males, while the other is a female. I cannot resist the conclusion indicated in the above revised synonymy, in which, of course, the older name of Daudin takes precedence.] The fine specimen in Mr. Buckley's collection which I formerly named A. nasicus (P. Z. S. 1880, p. 491) does not really belong to that species, only superficially resembling it, and is apparently an undescribed one, which I have pleasure in naming after m y friend M . Boulenger:- 18. A N O L I S B O U L E N G E R I , sp. n. (Plate XXIV. fig. 1.) Head elongate ; muzzle raised ; prsefrontal space concave ; anterior upper portions of head covered with rounded or polygonal scales, moderate-sized, slightly convex on the muzzle, flat on the frontal region. Orbital semicircles of very large scales, separated on the vertex by the interorbitals, which have dwindled to one or two very small scales in a single series. A central group of large supraorbitals surrounded by small rounded or polygonal ones. A single long anterior supraocular continuous with the long canthal scales. Occipital plate large, rounded, very little longer than wide, larger than the ear-opening. Six series of frenals. Seven supralabials ; eight infralabials, with large scales in several rows beneath. Scales of the entire upper surface and sides uniform, minute, granular ; those of the ventral surface very small, rounded, and distinctly carinate. Toes with broad dilatations. Tail long. Bright green, with round pearl-like white spots in transverse rows on the back and sides. Lower parts yellowish. millim. Total length 280 Length of snout to the eye 11 Distance from tip of snout to ear-opening .... 21 „ „ „ fore limb 35 „ „ „ vent 79 Length of fore limb 32 „ third and fourth front toes 8 ,, hind limb 57 „ third hind toe 9| „ fourth hind toe 14 From Canelos. This species shows a remarkable analogy to A. punctatus in the shape of the head, proportions of the body and coloration, the white spots being very similar. It is, distinguished, however, by the keeled ventral scales, those of A. punctatus being flat and smooth. A peculiarity which I have remarked in all the |